Impeoyement in method of sissssgt tubtjlae wells



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IMPROVEMENT IN METHOD OE SINKIING TU'BULAB. WELLS.

SPECIFICATION- TO ALL WHOM IT MAY CONC/EEN:

Be it known that I, ORRIN PRATT, of Athol, in the county of Worcester,and State of Massachusetts, have invented certain new and usefulimprovements in boring for and Sinking Tubular Wells; and I do herebydeclare the following to be a full, clear, and exact vdescription of themanner of :doing the same, reference being had to the accompanyingdrawings, making a part of this specication, in which- A V Figure lrepresents an external view of the boring instrument for boring a hole,and sinking-an external tube or Acase at the same time. Figurerepresents a vertical section through the same. Figure 3 represents anexternal view of the outer tube. I Figure 4 represents a section throughu. portion of thesanie to show how the'sections are united.

Figure 5 represents an external view of the strainer which sets inthebcttom of the tubular well when made. i

Figure represents a vertical section through the strainer. Similarletters of reference where theyoccur in the separate figures denote likeparts of the apparatus in all of them.

My invention consists in the combined use of a boring instrument,working with, through, and'under an external case or tube, so as tocarry down with itself said external tube to the proper depth,andthenibe withf draivn through said external case, which remains forthe proper placing of the tubeand strainer, that forms the tubular well,and is then also withdrawn, leaving the tube and strainer to occupy thehole so bored. i

To enable others skilled in the art to make anduse my invention, AI willproceed to describe'the same with reference to the drawings.

The boring instrument is composed substantially of a handle, or othermeans of turning it, A; a rod or shaft B; a tube C; and the severalnecessary appliances connected thereto, viz, a lip a, a cutting tool b,peculiarly hung thereto, a valve c, and a collar d, made adjustable onthe rod B, by `means of the set-screws e, or otherwise. The lipaprojects below the bottom of the tube C, and the cutting or boringinstrument b is pivoted thereto,

as at f, so that when it is cutting, as in the position shown in blacklines in tig. 1, itV will project beyond th outside perimeter of thetube, C, and far enough beyond to bore a hole capable of taking in anexternal tube, D, through which the tube C and the boring instrumentcanreadily pass. And when the boring instrument is withdrawn for anypurpose, said cutter b will drop into the position shown by red lines iniig. 1, and thus allow the Whole boring instrument to be readily drawnup out 0f the hole Whilst the outer case remains in it. As the` boringinstrument goes down, the earth or other material loosened by it passesinto the tube C, raising up the i hinged valve o in doing se. When theboring instrument is drawn up, the valve c'closes, and holds thematerial in the` tube. When the boring instrument is passed through theouter tube D, the collar dis set down on top of said outer tube, andthere fastened. Now, by working the boring instrument, it descends andcarries with it the outer tube or case. iThis outer tube is made insections, and nuitedby a bayonet fastening, g, or otherwise, so thatthey may be readily united or disconnected. The shaft or rod, 4B, 'canalso be lengthened by added sections as the hole is bored deeper anddeeper. The borings remain in the tube, C, and thus the nature andquality of the earths bored through are always known, as well as whenwater is reached, and `the depth of it; and that there may be nohindrance to the filling of the tube, C, air or water holes, h, are madethrough its head or cap, i, for that purpose. When the hole issutliciently deep and a supply of water obtained, the boring instrumentis raised up and out of the hole, whilst the external case or tube Dremains in it. Then a strainer, E, (made as hereafter described,)connected to a tube of suiiicient length, is passed down through theexternal tube D, and when down the outer tube, is withdrawn from thehole and `the tubular well is finished and ready 4to receive a pump orany other means of drawing up water through it. Thus tubes are quickly:ind cheaply put down, to form wells, without driving them into theground as now practised, and in which driving process there ,is nodegree of certainty at all, if even they do not get jammed up or brokenin the attempt. The strainer E, which forms the bottom of the tubularwe1l, I make as follows: l rst prepare an external tube, c losed at itsbottom, and bored full of holes, j. Inside of this tube I place a wiregauze screen of a corresponding tubular i form, and inside of the gauzeanother tube, k, also bored full of holes, l. When the inner tube isthus placed, .a nut, m, is run down against it and the gauze, and thewhole is firmly held in place. The strainer will thus admit the waterinto the interior of the tubular well and keep out the sand or gravelwhich would choke it up.

Having thus fully described my plan of sinking tubular wells, what Iclaim therein as new, and desire tof secure by Letters Patent, is-

So combining, with an external tube or case, a. boring instrument, suchas described, as that said instrument will bore a. suitable hole for,and carry down with itself, the external tube, which can remain Whilstthe bol-er A is withdrawn, and until the tubular well and strainer areintroducedfand the external tube then withdrawn from the hole, theoperationbeing such substantially as described. l A

' ORRIN PRATT. .s

Witnesseg:

Ons. FIELD,

AzER B. FOLSEM.

